Feed-water heater.



Patented Nov. I2, IQOI. A. S. MANN.

FEED WATER HEATER.

(Application filed Apr. 16, 1900.

(No Model.) 2 Sheets-Sheet I.

Wm! EEEEIE: Pk PI K THE uamus wzvzns co, morouwo" wAsHmnTOMD. c.,

No. 686,313; Patehted Nov. I2, I90]. A. s. MANN.

FEED WATER HEATER.

. (Application filed Apr. 16, 1900. (No Model.)

2 Shee ts-Sheet 2.

WIT E5555; a

m: NORRIS-PETERS co, PMOYO-LITHO.. wnsumcmn, n. c,

UNITED STATES PATENT OFFICE.

ARTHUR S. MANN, OF NEW YORK, N. Y., ASSIGNOR TO \VALWORTH MANU-FACTURING COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OFMASSACHUSETTS.

FEED-WATER HEATER.

SPECIFICATION forming part of Letters Patent No. 686,313, dated November12, 1901.

Application filed April 16 1900. Serial No. 13 ,114. (N model.)

To all whom it may concern: out the entire shell and cause the heat tobe Be it known that I, ARTHUR S. MANN, of evenly distributed over theentire heating- New York, county of New York, and State of surface. Themost convenient way of pro New York, have invented an Improvement inviding the apparatus with such expansion- Feed-Water Heaters, of whichthe following chamber is by inclining the walls thereof awaydescription, in connection with the accompafrom the inlet-opening, whichis preferably nying drawings, is a specification, like letters at theside of the shell, the tubes in front of on the drawings representinglike parts. the inlet-opening being protected from the The presentinvention relates to a feed-wadirect impact of the steam by means of abaf- IO ter heater, and is embodied in aheater of novel fle-plate, theenlarged space between the acconstruction and arrangement, the objectbetual steam-inlet opening and the baflie-plate ing to increase theheating-surface and the thus constituting the necessaryexpansionconsequent heating capacity and at the same chamber and causingthe steam to expand time to obtain a heater in which the joints evenlythroughout the shell.

15 and connections will be comparatively unaf- Figure 1 is a transversesection of a heater fected by expansion and contraction. embodying theinvention, the section being The heater embodying the invention comtakenon a plane adjacent to the steam-inlet. prises a shell containing bentor U-shaped Fig. 2 is a similar transverse section taken tubes and beingprovided at the end with two through the steam-outlet; Fig. 3, alongituzo water-chambers, one of which has an inlet dinal section of aportion of the shell and baf- 7c and the other an outlet, one of thesaid chamfie-plate, the water-tubes not being shown; bers communicatingwith one end of each tube and Fig. 4 is a complete longitudinal sectionand the other chamber communicating with of a'double heater providedwith a cross conthe other end of each tube, so that the waternection,'the relative positions of the steam 2 5 entering one chamberpasses through the inlet and outlet and that of the tubes being tubesfrom one chamber to theother, being somewhat difierent from thearrangement subjected to the heat of the steamwithin the shown in theother views in order to more shell. It is practicable with thisconstruction clearly illustrate the construction. to connect two of theshells together endwisc, Referring to Fig. 4, the heater comprises a 0with the bent portions of the tubes projecting shell (1, preferablycylindrical in shape, proinward toward each other, and to connect thevided with a head a containing the waterwater-outlet chamberatone end ofthe heater tubes 1), which, as shown, are curved or U- with thewater-inlet chamber at the opposite shaped, so that each end of eachtube is conend of the heater, so as to double the capacity nected withthe head a and opens through 5 of the heater, the two shells being incommuthe same. The said tubes are commonly exnication, so that theentire heating-space is panded into the said head in the usual way.filled with exhaust-steam. The outlets at one The shell a is providedbeyond the head 0. end and the inlets at the otherend, however, withwater inlet and outlet chambers c and are not necessarily connectedtogether in sed, which are separated from each other, as

0 ries, so to speak, since it is obvious that the shown, and provided,respectively, with in- 0 same heating capacity is afforded if thewategrlet and outlet ducts c and 01 The said chamis passed into eachend of theheater bymeans bers are shown as formed by clamping to the of branchpipes, or, in other words, in mulshell-head a smaller annular shell,which is tiple. closed by means of a supplemental head e,

5 A further feature of the invention consists bolted to a flange uponthe said shell, and 5 in providing the heater with an expansionalsopreferably connected, as by a bolt 9 chamber to receive theexhaust-steam before with the head a each of the said heads havitreaches the tubes, so that the said steam ing a projecting rib e and0L3, respectively,

. instead of blowing directly against the tubes which come in contactwith each other to 50 will expand to greater advantage through form thedividingwall between the inlet- 1c for the water.

chamber 0 and the outlet-chamber d. The tubes are shown as supportedwithin the shell by means of plates 19 (see Figs. 1 and 2,) the saidplates having openings to receive the tubes and being so shaped as tofit within the shell to thereby hold the inner portion of the tubes inposition. As shown in Figs. 1 and 2, the two ends of the heater areprefer ably coupled together in such relative positions that the bentportions of the tubes will be at an angle to each other, since thisaffords a better distribution of the heating-surface and causes the sameto be subjected to the action of the steam to better ad vantage. Forconvenience in illustration, however, the two ends of the heater areshown in Fig. at as coupled together with the bent ends of the tubessubstantially parallel,since the arrangement of the main steam-inlet andthe steamoutlet is more conveniently illustrated in this way, while itis immaterial so far as relates to the invention what the actualposition of the tubes and steam inlet and outlet may be. In order tomake this fully clear, it may be stated that the left-hand portion ofFig. 4 is a true section on the line A A of Fig. 1, while the right-handside of the said Fig. 4 is a true section on the line B B of Fig. 2.

The shell a is provided with a steam-inlet a and steam-outlet 0, and inorder to provide an expansion-chamber for the steam the walls of theshell are inclined away from the actual inlet, as best shown in Figs. 1,2, and 3, so that the steam can expand before coming in contact with thewater-tubes instead of impinging directly against the tubes as it passesinto the shell.

To aid in the protection of the tubes from the direct impact of thesteam and in the distribution of the steam over the heatingsurface, theheater is provided with a baffleplate a"', situated in the path of theincoming steam and so shaped as to overlie and protect the tubes, at thesame time deflecting the steam between and around the tubes, so that theheating effect will be completely and evenly distributed over the entireheating surface.

In order to practically double the capacityof the heater, two of theshells a may be employed and clamped together, as best shown in Fig. 4,the shells being substantially the same in construction and eachprovided at one end with the inlet and outlet chambers In this case theoutlet OZ from the chamber at at one end is connected, as by apipe D,(shown in dotted lines, Fig. 4,) with the inlet-chamber c at theopposite end, the said pipe D communicating with the inlet c while theoutlet 01 from the chamber (1 at that end leads to the boiler. In thiscase the water entering at the first inlet 0 will pass through the tubes19 at one end of the heater into the chamber 01 at the same end, andthence to the chamber 0 at the opposite end and through the tubes to thechamber d, the entire shell being filled with the exhaust steam. It isimmaterial, however, whether the tube D is utilized or not, since theapparatus may obviously be so piped as to cause the water to be dividedbefore reaching the heater, part entering the inlet-chamber at one endand part entering the inletchamber at the other end. As will be seenfrom the drawings, the parts are so constructed that the additional orsupplemental shell may be clamped to the main shell without changing anyof the parts, each shell being provided at each end with flanges whichare adapted to receive either one of the heads a or the flange of asupplemental shell. As a matter of construction the main shell is shownas provided with the sole steam-inlet and also with the steam-outlet oropposite thereto, the baffle-plate of course being also contained insaid main shell. The supplemental shell is provided with a steam-outleta and has no steam-inlet of its own, the steam passing from the maininlet through the shell and out through the outlet a, the outlet a beingin this case out 01f. This construction renders it unnecessary to makeso many different sizes of heaters, and if a double-ended heater isinstalled it is obvious that should the tubes at either end leak orbecome defective the other end may still be used by changing theconnections, so that it is not necessary to immediately shut down forrepairs. The tube D is shown as provided with a valve D ,which can beshut off in case only one end of the heater is to be used, and the watercan be taken from the chamber d by any suitable pipe connection.Furthermore, the supple mental shell can be readily removed and a closedhead clamped on in its place, if desired. The double-shell construction,however, is not essential, since a single shell provided with thenecessary steam inlet and outlet might be provided at each end with theinlet and outlet chambers for the water, the tube system being the sameas shown and described.

It is not intended to limit the invention to the specific constructionand arrangement shown and described, since modifications may be madewithout departing from the invention.

I claim- 1. A feed-water heater comprising a shell to contain steam, awater-inlet chamber at each end of said shell and a water-outletchamber; a series of bent or U-shaped tubes at each end of the shellprojecting toward each other, the said tubes constituting closedwater-passages leading into and out of the shell from the water-inletchamber to the water-outlet chamber at the same end of the shell; andmeans for distributing the steam throughout the shell, as set forth.

2. A feed-water heater comprising a shell having at each end awater-inlet chamber and a water-outlet chamber, the outlet-chamber atone end being connected by means of a tube or duct to the inlet-chamberat the 0p tween the said tubes and the steam-inlet to take the directimpact of the steam; and an expansion-chamber to permit expansion of thesteam before it comes in contact with the tubes, as set forth.

In testimony whereof .I have signed my name to this specification in thepresence of two subscribing Witnesses.

ARTHUR S. MANN.

Witnesses:

TEssIE DAVIS, CHAS. FAUST.

